Hi! The following patch attempts to clarify the diagnostics, so that one e.g. doesn't look for import std::whatever; in the headers or something similar.
Tested on x86_64-linux and i686-linux, ok for trunk? 2026-05-15 Jakub Jelinek <[email protected]> PR libstdc++/125200 * g++.dg/plugin/std_module_exports_plugin.cc (plugin_dump_decl): Use %< and %>. Clarify the error message and add a note. --- gcc/testsuite/g++.dg/plugin/std_module_exports_plugin.cc.jj 2026-04-29 07:54:50.593757510 +0200 +++ gcc/testsuite/g++.dg/plugin/std_module_exports_plugin.cc 2026-05-14 11:13:56.495169735 +0200 @@ -106,13 +106,19 @@ plugin_dump_decl (tree decl, char *scope if (((int) whitelist[i].enabled_in & (int) this_std) != 0) { inform (DECL_SOURCE_LOCATION (decl), - "missing using %s%D; whitelisted", scope, name); + "missing %<using %s%D;%> whitelisted", scope, name); return; } break; } - error_at (DECL_SOURCE_LOCATION (decl), "missing using %s%D;", scope, name); + auto_diagnostic_group d; + error_at (DECL_SOURCE_LOCATION (decl), + "missing %<using %s%D;%> in libstdc++-v3/src/c++23/std*.cc.in", + scope, name); + inform (DECL_SOURCE_LOCATION (decl), + "%<%s%D%> found in std namespace but not exported from std module", + scope, name); } void Jakub
